MacBook Air OS X Version 10.9.5
If you ordered a “My Passport for MAC”, chances are the WD external drive has been pre-formatted/compatible to work with your Mac/Apple device including Mac/Apple’s Time Machine app that allows you to back up your information, pics, media, ect.
If your not sure, be safe call WD’s (Western Digital Technologies) support service line (USA To Call) or specifically pick your product 1st & solve online, which will depend on your area/country. However, these are the steps they will take you through to confirm that your computers info has indeed been backed up. I just got off the phone with them to get help with your exact question :-) LOL.
I purchased Western Digital My Passport 1 TB Portable Hard Drive for Mac, Silver by Western Digital
During the 1st use which can take hrs if you computer’s disc is full (mine took 3-6 hrs), “My Passport for Mac” backs up EVERYTHING on your computer. To check,
go to Finder,
Click on the icon of a hard drive saying “My Passport for Mac”.
Next click the 1st folder labeled Backups...
Next a folder with the name your registered the computer with shows, click that.
Next click any folder listed or “latest” folder showing.
Next click Macintosh HD
The last Folder listed should say “users”, click that.
Again, folder with the name your registered the computer with shows, click that.
Everything backed up shows. You should see a folder labeled “pictures”. Click that & you will see all your pics/pic folders you made
You should also see a folder labeled “music”, click that.
Now you will see: Garage Band, iTunes. Click iTunes, you should see folders: Album Artwork, iTunes Media, iTunes Music.
Clicking on any of the above mentioned folders shows what’s backed up.
Now that you know your items have been backed up, EJECT/REMOVE “My Passport for MAC” to be safe, and start deleting items you choose off your computer’s hard drive to free up space.
Reinsert your “My Passport for MAC” external drive when you need/want to retrieved backed up items you deleted off of your computer’s hard drive.